Scoreboard "Health" out of sync (rounds down)

Was messing around with the new effects on a server, and after quite a bit of randomly playing with, adjusting my max health and eating golden apples, I caused my health indicated on the scoreboard to fall out of sync with the displayed number of hearts in game.
The scoreboard created was /scoreboard objectives add CurHP health Health
Used the /effect Vandesdelca32 21 9999 19 to give myself 100 health.

Note the screenshot health says -1, when it should say 0 for a dead player.